The YA series is set in a post-apocalyptic world where 24 teenagers -- one boy and one girl from each of 12 districts -- compete in a televised death match. The series focuses on Katniss Everdeen, a 16-year-old girl who volunteers to take the place of her younger sister in the competition. The much-anticipated movie version starring Jennifer Lawrence, Josh Hutcherson and Liam Hemsworth opens March 23 in theaters.

Amazon does not release sales statistics for the Kindle, so the exact number of copies sold is unknown. However, the three books in the Hunger Games trilogy -- The Hunger Games, Catching Fire and Mockinjay -- hold the top spots on Amazon's Kindle sales chart for 2012. The print version of the trilogy has sold about 23.5 million copies since the first book was published in 2008.

Amazon also announced the 20 cities in which The Hunger Games books are most popular based on sales per 100,000 residents.

The list shows the broad appeal of the books but also reflects that the series is most popular in West Coast cities with strong technology economies and reputations as libreral hotbeds and sunbelt cities perceived as more conservative. The top spots are held by high-tech hotbed Sunnyvale, where Yahoo has its headquarters, and conservative Salt Lake City, home of the Mormon Church.

See the complete list:

1. Sunnyvale, Calif.

2. Salt Lake City

3. Tallahassee, Fla.

4. Seattle

5. Orlando

6. Pittsburgh

7. St. Louis

8. Provo, Utah

9. San Francisco

10. Naperville, Ill.

11. Washington

12. Richmond, Va.

13. Scottsdale, Ariz.

14. Wilmington, N.C.

15. Murfreesboro, Tenn.

16. Vancouver, Wash.

17. Portland, Ore.

18. Tampa, Fla.

19. Overland Park, Kan.

20. Norman, Okla.

"There's no denying that The Hunger Games has become a worldwide phenomenon," said Jessica Schein, Young Adult Books Editor at Amazon. "You can see from our Top 20 list they're captivating readers across the country."